baber/WOPTO huggingface dataset:
Patent GB-725003-A (GB)
Title: Improved fluid-pressure actuator
IPC: F15B15/14
Filed: 1953-03-16
Abstract: 725,003. Pneumatic single-stroke apparatus. GENERAL MOTORS CORPORATION. March 16, 1953 [March 27, 1952], No. 7135/53. Class 8 (2). [Also in Group XXIX] Locking of the fluid pressure actuated piston 3 in any position is effected by meshing of radial teeth 132 of a spring-loaded locking ring 118 carried by a rotatable shaft 100 in screwthreaded engagement with the piston 3 with corresponding teeth 134 of a collar 136 secured to the cylinder end ; unlocking being effected on the application of fluid pressure to either end of the cylinder 2 whereon the shaft 100 is free to rotate and so allows the piston 3 to be linearly displaced. In operation and to extend the piston 3 and a load device 9 linked to the piston rod 5 fluid pressure is applied to a chamber 26 through a port 126, an 'opening 160 in the collar 136 and between inner and outer races of ball bearings 102, 104 supporting the shaft 100, and fluid pressure is simultaneously applied to a lock release port 154 leading to a cylinder 142 to displace a piston 144 having an extension 148 abutting a thrust bearing 130 seated in a cup 124 secured to the spring-loaded locking ring 118. On disconnecting the fluid supply at any position of the piston 3 the ring 118 is returned by the spring 128 into engagement with the collar 136 which prevents rotation of the shaft and hence displacement of the piston 3 and its rod 5. Return of the piston 3 is effected by applying fluid pressure to a cylinder port 32 and also to the lock release port 154 ; the port 156 being connected to exhaust. Balls 29 in piston grooves 27 provide a substantially frictionless ball-nut and screw connection between the shaft 100 and the piston 3, and the ring 118 is connected to the shaft 100 by splines 108, 120 which whilst preventing relative angular displacement of the members 100, 118, allow slight axial displacement thereof.
Patent GB-211354-A (GB)
Title: Improvements in and relating to brooms
IPC: B25G3/12
Filed: 1923-03-12
Abstract: 211,354. Jacobson, E. C. March 12, 1923. Fixing by screwed sockets with clamping and toothed holding devices and flange attachments. -A broom is provided with a flanged screwed socket engaged by a screwed sleeve on the handle provided with a lock nut to fix it in the sleeve. As shown, applied to a broom head 10 provided with a neck portion 11, the screwed socket 12 is provided with a flange 13 having a downwardly extending edge or flange 14 enclosing the upper end of the part 11 of the straw &c. of the head 10, and its lower edge has teeth 16 for locking it in position. The screwed sleeve 20 on the handle 19 is threaded at its upper end 21 for a lock nut 22 which is serewed-up against the flange 13 to lock the handle in the socket. The neck portion 11 is bound below the flange 13 with wire 15, and at its lower part with wire 17, the latter binding being protected by a covering sleeve 18.
Patent GB-311040-A (GB)
Title: Improvements in or relating to folding tables
IPC: A47B3/087
Filed: 1928-03-08
Abstract: 311,040. Antin, A. March 8, 1928. Folding tables.-A folding table of the the kind with leg frames 7, Fig. 2, hinged at the ends of the table top is fitted on its under side with flat springs 1 in which are two holes 2, 3 engaging with serews &c. 4, 5 in the crossbar 6 when the table legs are in the vertical or the folded position respectively. The spring terminates in a right-angle finger piece 10, which is pressed down to release the spring from the screws &c. 4, 5. It enters a handle 13 for carrying the table, and is adjacent to a handle 14 by means of which the parts 6, 7 may be moved. The leg frames may be stayed by struts, the ends of which slide either on the legs 7 or on the underside of the table top.
Patent GB-526002-A (GB)
Title: Improvements in and relating to spark plug insulators and method of making the same
IPC: H01T13/38
Filed: 1939-03-06
Abstract: 526,002. Refractory substances. CHAMPION SPARKING PLUG CO., Ltd. March 6, 1939, No. 7239. Convention date, May 27, 1938. [Class 22] A ceramic insulating material for forming spark plug insulators &c. consists of sintered alumina containing small proportions of calcium and magnesium oxides. A slip is produced by grinding alumina with a calcium compound such as whiting, lime &c. and a magnesium compound such as magnesium carbonate, talc, soapstone, brucite &c. or with dolomite, and the slip is compressed into a mould and fired. The composition contains silica derived either from the added materials or from the balls used in grinding the slip.
Patent GB-653064-A (GB)
Title: Test-milking apparatus
IPC: A01J5/04
Filed: 1948-03-09
Abstract: 653,064. Sampling liquids. REDIN, E., and RYDE, H. March 9, 1948, No. 7265. Convention date, April 26, 1947. [Class: 106(v)] [Also in Group I] A test milking apparatus comprises a vacuum driven milking machine a receptacle adapted to be closed air-tight and connected to the milk delivery conduit of the said machine and a test tube removably inserted in the said receptacle so that it communicates with the interior space of the said receptacle and is filled with milk according as the receptacle is filled with milk, the interior space of the said receptacle being also connected to the source of vacuum of the milking machine. In the drawing a casing 100 containing the milking machine is connected to milk receptacle 101 which contains a test tube holder 3, in which the test tube is locked by a key and simultaneously opened, and float 27 for indicating the quantity of milk. A tap 32 is also provided combined with a non-return valve. The milking machine comprises teat cups 4 attached to milk tubes 5 and pulsation tubes 8, the two sets of tubes being wound on spring-controlled drums 6 and 10 respectively so that the teat cups are moved for use against the action of the springs and, when released, are retracted by action of the springs to their position in ports in the casing 101. The drum 6 is connected to the vacuum supply pipe 15 by way of pipe 16 and pipe 7 and drum 8 is connected to pulsator 11. Various stages of operation of the milking machine are recorded on a strip 17 which is unwound from drum 18 and wound on to drum 19 by clockwork mechanism 30. Pencil 23 marks on the strip the times of removal and retraction of the teat cups. Pencil 24, connected to float 27, records the quantity of milk in the receptacle. Numbering roll 28 is operated manually by knob 29 outside the casing 100. Specification 635,428 is referred to.
Patent GB-846344-A (GB)
Title: A thermionic-valve audio-frequency power amplifier
IPC: H03F3/28
Filed: 1958-03-06
Abstract: 846,344. Valve amplifying circuits. MURRAY, J. S. March 6, 1959 [March 6, 1958(2)], Nos. 7268/58 and 25252/58. Class 40(6). An audio-frequency power amplifier comprises a pentode or a cascade stage followed by a longtailed pair phase splitter and a push pull output stage, wherein the control grid of one valve of the phase splitter is D.C. coupled, either directly or through a cathode follower, to the anode of the pentode or the upper valve of the cascode stage, that of the other being maintained at the same D.C. potential but decoupled to earth for signal frequencies. Bias for the pentode or cascade stage is obtained by D.C. connecting the screen grid of the pentode, or the control grid of the upper valve of the cascade, to a point on the common cathode resistance of the phase splitter through a network which decouples the grid at signal frequencies but not at very low frequencies or D.C. In the embodiment shown in Fig. 1 the coupling network Consists of a capacitor C and resistor R which applies negative feedback at very low frequencies and at the same time effects a phase shift to the feedback signal, increasing the stability of the circuit at very low frequencies. Overall negative feedback may be applied from the output stage of the amplifier through the loop 32. In the embodiment shown in Fig. 4, a pentode input stage is used and a cathode follower 41 is included between the pentode stage and the long-tailed pair. The bias coupling network containing C, R may be connected by the lead 43 to the common cathode impedance of the phase splitter, or by lead 44 to the cathode of the cathode follower stage 41. The modification of Fig. 3 (not shown) has a pentode input stage preceded by a pre-amplifier circuit having a tone control. The cathode return circuit of the pentode stage is modified to include a balance-potentiometer, the circuit being intended to form part of one channel of a stereophonic system.
Patent GB-1515233-A (GB)
Title: Railway car underframe
IPC: B61F5/14
Filed: 1976-02-24
Abstract: 1515233 Underframes DRESSER INDUSTRIES Inc 24 Feb 1976 [27 Feb 1975] 07288/76 Addition to 1485699 Heading B72 A railway car underframe has a tubular sill 5, Fig. 1, having an equilateral parallelogramic cross-section arranged with two opposite apices in a vertical plane, connected to a draft sill 6, Fig. 2, of inverted U-shaped cross-section by a transition member 11 which telescopes into and mates with the surfaces of both sills and also forms a centre pocket 25, Fig. 4 with the draft sill.
Patent GB-1536731-A (GB)
Title: Insulating coating compositions for applying on electrical steel sheets
IPC: H01F1/18
Filed: 1976-02-25
Abstract: 1536731 Insulating coating compositions NIPPON STEEL CORP 25 Feb 1976 [25 Feb 1975] 07372/76 Heading C3V Insulating coating compositions for electrical steel sheets comprise (1) 10 to 90 weight per cent of u.v.-curing or electron beam-curing organic resin and (2) 90 to 10 weight per cent of a Li, Na, Mg, Al, K or V oxide, phosphate, silicate or sulphate, or mixture thereof with 1 to 50 weight per cent of boric acid and/or a borate. The resin may be an acrylated or methaorylated epoxy, polyether, polyester, silicone or urethane resin, optionally with an unsaturated crosslinking agent, e.g. a hydroxyalkyl acrylate or polyol poly(meth)acrylate, to control the viscosity of the resin. Photoinitiators, e.g. benzoins, benzoylperoxide and benzophenone, may be present. The compositions may be applied in one or more layers, preferably following annealing in a continuous process for the manufacture of the sheets.
Patent GB-127676-A (GB)
Title: Improvements in Hydraulic Transmission Apparatus.
IPC: F01L9/11
Filed: 1917-05-23
Abstract: 127,676. Armstrong, Whitworth, & Co., Sir W. G., and Allan, A. May 23, 1917. Valves controlled from a distance.-In hydraulic apparatus for operating the valves of an internal combustion engine, the transmitting cylinder C', Fig. 1, communicates with a compensating tank E' by means of ports D' which are open during the first part of the piston stroke, the pressure in the tank being maintained by an adjustable spring-controlled plunger F'. The transmission line may be connected to the tank by a by-pass R<1> with valve S<1>, the effective stroke of the transmitting piston may be varied by means of a screwed sleeve Y', Fig. 3, and the by-pass may consist of a port in the cylinder C<1> above the ports D<1> controlled manually by a valve. Means for removing air may be provided.
Patent GB-419194-A (GB)
Title: Improvements in or relating to advertising apparatus
IPC: G09F19/18
Filed: 1934-03-09
Abstract: 419,194. Changing signs. JONES, W. E. H., Silverlyn, Park Drive, Grange Road, Rhyl, Flintshire, and KNOWLSON, H., Trem-y-twr, Rhuddlan Road, Abergele, Denbighshire. March 9, 1934, No. 7494. [Class 3 (i).] Optical - projection apparatus.-A disc transparency 13 bearing display matter near its periphery is continuously rotated between a source of light 15 and a partition 11 carrying optical-projection lenses 12, a viewing screen 14 being disposed on the far side of the partition 11 from the light 15. A heat-shield 25 above the lamp 15 may be a parabolic reflector. The disc 13 may carry two or more lines of display matter, which may be in spiral form, and the lens system 12 is then made manually or automatically adjustable to bring it into register with any desired line. The automatic adjustment may be effected by cams &c. driven from the motor 18. The disc 13 is of glass or celluloid or of opaque material formed as a spider or a stencil, and may be detachably mounted on the spindle 16. A template provided with guiding lines and a central peg may be employed to facilitate marking transparent discs. The screen 14 is of paper, linen, ground glass &c., or an external screen may be employed. The cabinet 10 may be constructed of top and bottom frames 26, 27 rebated to receive upper and lower and side panels 23, 31, 29, metal corner uprights being placed in position before screwing together. A cowl may be fitted over the screen 14, and the lamp 15 may be replaced by a mirror reflecting daylight. The motor 18 may be an electric clock.
Patent GB-431485-A (GB)
Title: Improvements in or relating to cutting or shearing appliances
IPC: B26D1/30
Filed: 1934-03-09
Abstract: 431,485. Cutting thin stone slabs. CLARK, C. E., Highcroft, Bramber, Steyning, Sussex. March 9, 1934, No. 7516. [Class 124] [See also Groups VIII and XXII] For asbestos-cement, a pivoted-cutter 1 provided with two parallel cutting edges 2, 3 of convex contour co-operates with and passes between two opposed cutting edges 12, 13. The lower face of the cutter 1 between the edges 2, 3 may be of concave arcuate or V-form. The edges 12, 13 preferably straight may be provided on metal bars 7, 8 attached to wood blocks 4, 5. The upper faces of the bars 7, 8 may be bevelled outwards.
Patent GB-542802-A (GB)
Title: Improvements in or relating to lubrication
IPC: C09K5/20
Filed: 1940-04-26
Abstract: 542,802. Lubricants; sulphonamides. DU PONT DE NEMOURS & CO., E. I. April 26, 1940, No. 7526. Convention date, April 27, 1939. [Class 91] [Also in Group IV] In metal forming, shaping or machining operations, the contacting parts are cooled and lubricated by applying thereto an aqueous carrying medium containing an aliphatic, cycloaliphatic or aromatic sulphonamide. The sulphonamides may be prepared by reacting ammonia with the desired sulphonyl chlorides; suitable sulphonyl chlorides may be obtained by reacting non-gaseous petroleum fractions with sulphur dioxide and chlorine, whereby a complex mixture including chlorohydrocarbon sulphonyl chlorides is obtained. Sulphonamides containing chlorine are particularly suitable for the process of the invention. The sulphonamides may be incorporated in water or aqueous solutions in the form of their alkali metal salts, or they may be dispersed or emulsified in water by means of an emulsifying agent, e.g. Turkey red oil, alkali metal and amine salts of long chain aliphatic acids such as sodium oleate, sodium stearate and triethanolamine oleate, amine and alkali metal salts of higher aliphatic alcohol sulphates, mineral oil sulphonic acids, sulphonated oils, alkylnaphthalene sulphonates, casein, glue, starch, dextrin, pectin, gums and polyvinyl alcohol. In examples the following sulphonamides are used (1) the sulphonamide prepared by reacting a paraffin base oil with chlorine and sulphur dioxide and treating the resulting sulphonyl chloride with ammonia, (2) cetanesulphonamide, (3) the sulphonamide obtained from paraffin wax sulphonyl chloride and ammonia, (4) propanesulphonamide, (5) hexanesulphonamide and (6) cyclohexanesulphonamide. Other sulphonamides mentioned are n-heptane-, m-octane-, n-dodecane-, n-tetradecane-, n-hexadecane-, n-octadecane-, 2-ethylhexane-, menthane-, pinane-, tetra-, and decahydronaphthalene-, p-toluene-, and 2-naphthalene-sulphonamides. The Specification as open to inspection under Sect. 91 mentions also secondary and tertiary sulphonamides obtained by reacting sulphonyl chloride with primary and secondary amines, including N-phenylcyclohexanesulphonamide, N- octadecyl-p-toluenesulphonamide, N:N-dimethylhexadecanesulphonamide and N-methyl-N- phenyl-dodecanesulphonamide. A large number of primary and secondary amines is specified; heterocyclic amines such as morpholine, piperidine, C-methylpiperidine, and hexamethyleneimine are also mentioned. The sulphonamide solutions are also stated to be suitable for the lubrication of textile fibres. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1118896-A (GB)
Title: Isotope separation process
IPC: B01D59/04
Filed: 1967-02-16
Abstract: <PICT:1118896/C1/1> Concentration of natural heavy isotopes of elements which are members of the group consisting of oxygen, nitrogen and carbon is effected by fractional distillation of a liquid mixture of methane and nitric oxide containing at least one isotope selected from the group consisting of 13C, 15N, 17O and 18O. The distillation is effected in a vacuum jacketed packed column 11 immersed in a liquid-nitrogen filled Dewar flask 10.  A predetermined volume of an azeotropic feed gas mixture containing 10% nitric oxide and 90% methane is admitted through a duct w2 to a condenser 15, the condensate flows down column 11 to a chamber 12 in which the isotopes are concentrated at a temperature below 106 DEG  K and 109 DEG  K and at a pressure of 500-600 mm. mercury gauge, the chamber 12 is then electrically heated at 13 resulting in vaporization of the lighter isotopes which are withdrawn through duet 22 and concentration of the heavier isotopes in the liquid residue which latter is subsequently withdrawn as vapour either by increasing the temperature of coil 13 or by removing the condenser 15.
Patent GB-460682-A (GB)
Title: Improvements in and relating to snap action mechanism for operating electric switches, valves and other devices
IPC: H01H5/04
Filed: 1936-03-12
Abstract: 460,682. Valves. RICHMOND, T. G., and MACLAREN & CO., Ltd., R. March 12, 1936, No. 7539. [Class 135] [Also in Groups XXXVII and XXIV] In a snap - action mechanism for valves of the kind described in Specification 451,005, the operating lever 5, carrying a valve (not shown) at the end remote from its pivot 6, is made resilient, as by a saw-cut A to provide a resilient biassing force instead of having the strut 18 resilient, or being mounted in resilient bearings. Instead of a saw-cut, the resilience may be produced by a large hole drilled in the member 5. Alternatively the member 5 can be made in two telescopic parts urged apart by a compression spring.
Patent GB-563878-A (GB)
Title: An improvement in or relating to tool feed motions for metal-planing machines
IPC: B23D7/00
Filed: 1943-05-13
Abstract: 563,878. Planing. SWIFT-SUMMERSKILL, Ltd., CARTER, J., and WADE, G. May 13, 1943, No. 7617. [Class 83 (iii)] In a feed motion for the tool box or boxes of a planing- machine, the feed is effected by an A.C. motor incorporating means actuated by the application of D.C. to bring it to rest rapidly, and is applied by rotation of the motor in one direction, rotation in the other direction effecting a quick power traverse of the tool box to starting position. A threephase star connected squirrel cage motor a, Fig. 1, has two of the windings adapted to be connected through switching means to a D.C. supply, such as the generator which supplies the work table reciprocating motor. Two worms b<1>, b<2> driven by the motor a engage worm-wheels c, k<1> which are connected by oneway clutches e, k of opposite hand to a shaft d and a crank disc j<1> respectively. A link i<1> connects the crank disc to a toothed-quadrant i meshing with a gear h carrying a pawl g engaging a ratchet f secured to the shaft d. While the table reciprocation is being reversed the motor a is switched in to rotate the crank disc j<1> by means of the clutch k through one complete revolution as determined by a spring detent m and during the first half of the revolution the segment i is rocked to rotate the shaft d which thus effects the tool-box feed, an adjustable shroud on the ratchet f determining the extent of the feed, and the second half of the crank rotation restoring the pawl g to its original position. When the motor a is rotated in the reverse direction, the clutch k overruns and the clutch e rotates the shaft d in a direction to traverse the tool box by power. A spring- actuated cam n engages a pulley n<1> secured to the shaft d to prevent the feed ratchet f from being rotated reversely. In a modified construction, a single worm driven by the motor a rotates a worm-wheel p, Fig. 4, which carries one-way clutches p<1>, p<2> of opposite hand connected respectively to an eccentric p<3> and the feed shaft d. For feeding the tool box, the motor is rotated in a direction to drive the eccentric which oscillates a toothed quadrant p<7> through a link and shaft p<6>, the quadrant rotating a gear p<8> through one revolution to actuate a pawl p<9> and drive the shaft d in the direction of arrow C by means of a ratchet r thereon and an adjustable mask, whilst for power traverse of the tool the motor is driven in the reverse direction to rotate the shaft d in the direction of arrow D. As in the first construction, a cam engages a pulley n<1> on the shaft d to prevent reverse rotation whilst the pawl p<9> is being retracted and a spring detent ensures the clutch p<1> making a single revolution only during feed.
Patent GB-1022641-A (GB)
Title: A process for the preparation of dicarbamates with non-identical carbamate groups from diols
Inventor: MOLNAR FRANCOIS
IPC: C07C271/06
Filed: 1962-02-27
Abstract: Non-symmetric dicarbamates of the formula <FORM:1022641/C2/1> where R1 is a C1- 6 alkyl group and R2 and R3 are different and may be hydrogen or a C1- 6 alkyl group, are made by reacting (a) one mol. of a diol <FORM:1022641/C2/2> with 2 mols. phosgene in the presence of 2 mols. of an acid acceptor to form the dichlorocarbonate, (b) blocking one of the chlorocarbonate groups by reacting the dichlorocarbonate with one mol. of a tertiary amine, (c) converting the unblocked chlorocarbonate group into a carbamate group by reaction with two mols. of ammonia or a primary amine NH2R, at a temperature not exceeding 20 DEG  C., and (d) converting the blocked carbonate group into a carbamate group different from that of step (c) by reaction with 2 mols. of ammonia or a primary amine, NH2R3, under more active conditions than those of step (c).  In steps (c) and (d) the second mol. of ammonia or amine acts as an acidacceptor. Step (d) is suitably effected at super-atmospheric pressures and/or temperatures up to 50 DEG  C.  The reaction may be effected in a solvent, e.g. halogenated aliphatic hydrocarbons or aromatic hydrocarbons. Examples relate to (1) and (3) N-isopropyl-2-methyl-2-n-propyl-1,3-propanediol dicarbamate, and (2) N - n - butyl - 2 - methyl - 2 - n - propyl - 1,3-propanediol dicarbamate.
Patent GB-372022-A (GB)
Title: A new or improved evaporator unit for refrigerating purposes
IPC: F25B39/02
Filed: 1931-03-12
Abstract: 372,022. Refrigerating. SEARLE, R., 40, Carson Road, West Dulwich, London. March 12, 1931, No. 7644. [Class 29.] Evaporators.-An evaporator unit .adapted to be used as a cold plate or in the construction of a storage chamber for ice cream &c. comprises a plate cast in aluminium &c. with one side flat and the other with a rib within which is cast the refrigerant duct c. The plates may be connected by angle-irons secured to lugs f. According to the Provisional Specification an ice cream cylinder may be cast with a spiral refrigerant duct in its wall.